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http://dx.doi.org/10.12925/jkocs.2014.31.2.231

Fabrication of the poly (methyl methacrylate)/clay (modified with fluorinated surfactant) nanocomposites using supercritical fluid process  

Kim, Yong-Ryeol (Department of Chemical Engineering, Daejin University)
Jeong, Hyeon-Taek (Intelligent Polymer Research Institute, University of Wollongong)
Publication Information
Journal of the Korean Applied Science and Technology / v.31, no.2, 2014 , pp. 231-237 More about this Journal
Abstract
The supercritical fluids (SCFs) have been widely used for material synthesis and processing due to their remarkable properties including low viscosity, high diffusivity and low surface tension. Carbon dioxide is one of the suitable solvents in SCFs processes in terms of its advantages such as easy processibility (with low critical temperature and pressure), inexpensive, nonflammable, nontoxic, and readily available. However, it has generally low solubility for high molecular weight polymers with the exception of fluoropolymers and siloxane polymers. Therefore, hydrocarbon solvents and hydrochlorofluorocarbons have been used for various SCFs process by its high solubility for high molecular weight polymers. In this report, a PMMA/clay nanocomposites were fabricated by using supercritical fluid process. The $Na^+$-MMT(montmorillonites)was modified by a fluorinated surfactant which is able to enhance compatibility with the chlorodifluoromethane(HCFC-22) and thus, improve dispersability of the clay in the polymer matrix. The PMMA/fluorinated surfactant modified clay nanocomposite shows enhanced mechanical and thermal properties which characterized by X-raydiffraction(XRD), Thermo gravimetric analysis(TGA), Dynamic mechanical analysis (DMA) and Transmission electron microscopy (TEM).
Keywords
supercritical; HCFC-22; clay; fluorinated surfactant; PMMA;
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Times Cited By KSCI : 1  (Citation Analysis)
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1 L. E. Nielsen and R. P. Landel. Mechanical Properties of Polymers and Composites. NewYork, Marcel Dekker. (1994).
2 L. A. Carlsson. Composite Material Series 7: Thermoplastic Composite Materials. Amsterdam ; Elsevier ; New York, NY, USA. (1991).
3 A. Okada and A. Usuki. The chemistry of polymer-clay hybrids. Mater. Sci. Eng. C3, 109 (1995).
4 E. P. Giannelis. Polymer layered silicate nanocomposites, Adv. Mater. 8, 29 (1996).   DOI
5 M. Ogawa and K. Kuroda, Preparation of inorganic-organic nanocomposites through intercalation of organoammonium ions into layered silicates, Bull. Chem. Soc. Jpn. 70, 2593 (1997).   DOI   ScienceOn
6 T. J. Pinnavaia and G. W. Beall, "Polymer -clay nanocomposites" Chichester, John Wiley & Sons. (2000).
7 J. W. Pack, S. H. Park, Y. W. Lee and Y. H. Kim, High molecular weight poly (L-lactide) and its microsphere synthesized in supercritical chlorodifluoromethane. Macromolecules. 36, 7884 (2003).   DOI   ScienceOn
8 S. C. Chung, W. G. Hahm and S. S. Im. PET nanocomposites filled with fumed silicas by melt compounding, Macromol. Res. 10, 221 (2002).   DOI
9 K. H. Kim, J. Huh, Synthesis of thermally stable organosilicates for exfoliated PET nanocomposite with superior tensile properties, Macromol. Res. 15, 178 (2007).   DOI
10 S. G. Kazarian, Polymer processing with supercritical fluids. Polym. Sci. Ser., C. 42, 78 (2000).
11 S. D. Yeo and E. Kiran, Formation of polymer particles with supercritical fluids. J. Supercrit. Fluids. 34, 287 (2005).   DOI   ScienceOn
12 S. K. Kumar, S. P. Chabria, R. C. Reid and U. W. Suter, Solubility of polystyrene in supercritical fluids. Macromolecules. 20, 2550 (1987).   DOI
13 V. P. Saraf and E. Kiran, Solubility of polystyrenes in supercritical fluids. J. Supercrit. Fluids. 1, 37 (1998).
14 J. L. Kendall and D. A. Canelas, Young JL, Desimone JM. Polymerizations in supercritical carbon dioxide. Chem. Rev. 99, 543 (1999).   DOI   ScienceOn
15 P. Purnama, S. H. Lim, Y. Jung and S. H. Kim,. Stereocomplex-nanocomposite formation of polylactide/fluorinated-clay with superior thermal property using supercritical fluid. Macromol. Res. 20, 545 (2012).   DOI   ScienceOn
16 J. G. Ryu, J. W. Lee and H. Kim, Development of PMMA-clay nanocomposites by using power ultrasonic wave. Macromol. Res. 10, 187 (2002).   DOI
17 J. J. Watkins and T. J. McCarthy, Polymerization in supercritical fluid-swollen polymers: a new route to polymer blends. Macromolecules. 27, 4845 (1994).   DOI   ScienceOn